Steamer base



FIG. 1 is top, front and side perspective view of a steamer base showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a right side elevation view thereof;

FIG. 8 is a cross-section thereof taken on line 8--8 in FIG. 2; and,

FIG. 9 is a cross-section thereof taken on line 9--9 in FIG. 2. 

The ornamental design for a steamer base, as shown and described. 